refrigeration systems, safe working practices and relevant standards, codes and regulations, including: major components, type and functions: evaporators compressors expansion devices ancillary components refrigerants system operation and performance: thermodynamic properties of refrigerants pressure enthalpy charts refrigerant cycle refrigerant cycle represented on pH charts introduction to refrigerating effect, heat of compression, heat rejected on high side, co-efficient of performance, liquid sub-cooling suction superheating effects on performance of changing operating pressures, liquid sub-cooling, suction superheating application of refrigeration: introduction to industrial refrigeration, specific system component types and refrigerants scope of commercial refrigeration, specific system component types and refrigerants refrigerated enclosures and cabinets: merchandising and display cabinets: deep freeze meat dairy fruit and vegetable multi-deck display single deck well type island cases glass door reach door reach in merchandisers defrosting methods cold rooms and freezer rooms types and construction insulation vapour barrier frost heave interior fittings location of equipment defrosting methods cold tracking trace heating storage conditions temperature relative humidity air velocity air patterns load limits air conditioning systems introduction to air conditioning systems, safe working practices and relevant standards, codes and regulations, including: WHS/OHS requirements: Building Code of Australia (BCA) requirements AS 1668 The use of ventilation and air conditioning in buildings parts 1 and 2 AS/NZS 3666 Air-handling and water systems of buildings noise and vibration air quality sick building syndrome operating requirements: ventilation air distribution terminal velocity temperature relative humidity air quality noise basic psychrometrics operating modes: ventilation evaporative cooling ventilation and cooling ventilation and heating dehumidification dehumidification and reheat humidification operating terminology/characteristics: throw and drop primary and secondary air coanda effect heating, ventilation and air conditioning (HVAC) system components and functions: fans ducting registers dampers filters cooling coils heating coils induction units fan coil units terminal units humidifiers, pumps and sprayers hydronic systems and components applications and construction of air conditioning systems: applications residential, commercial, low and high rise, industrial ventilation and air conditioning packaged plant split systems (wall and floor console, ceiling fan coil), wall facia, roof top and reverse cycle option central station plant all air systems, constant volume variable temperature, constant temperature variable volume, and air/water systems all water system, multi-zoning, thermal storage systems basic air conditioning system diagrams duct layout hydronic layout unit/conditioner drawings HVAC control systems: basic principles terminology symbols and diagrams basic applications problem-solving techniques relevant HVAC/R manufacturer specifications relevant job safety assessments or risk mitigation processes relevant workplace documentation relevant workplace policies and procedures typical thermodynamic performance issues. |